<template>
  <div style="text-align: center">
    <div style="">
    </div>
    <div style="">
      <el-form
        :model="form"
        :rules="rules"
        style="width: 550px;height: 280px"
        @validate="onValidate"
        ref="formRef"
      >
        <el-form-item prop="username">
          <el-input
            v-model="form.username"
            :maxlength="8"
            type="text"
            style="height: 40px"
            placeholder="用户名"
          >
            <template #prefix>
              <el-icon>
                <User />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="form.password"
            :maxlength="16"
            type="password"
            style="height: 40px"
            placeholder="密码"
          >
            <template #prefix>
              <el-icon>
                <Lock />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password_repeat">
          <el-input
            v-model="form.password_repeat"
            :maxlength="16"
            type="password"
            style="height: 40px"
            placeholder="重复密码"
          >
            <template #prefix>
              <el-icon>
                <Lock />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="email">
          <el-input
            v-model="form.email"
            type="email"
            style="height: 40px"
            placeholder="电子邮件地址"
          >
            <template #prefix>
              <el-icon>
                <Message />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-row
            :gutter="10"
            style="width: 100%"
          >
            <el-col :span="17">
              <el-input
                v-model="form.code"
                :maxlength="6"
                type="text"
                style="height: 40px"
                placeholder="请输入验证码"
              >
                <template #prefix>
                  <el-icon>
                    <EditPen />
                  </el-icon>
                </template>
              </el-input>
            </el-col>
            <el-col :span="5">
              <el-button
                type="success"
                style="height: 40px;width:150px"
                @click="validateEmail"
                :disabled="!isEmailValid || coldTime > 0"
              >
                {{coldTime > 0 ? '请稍后 ' + coldTime + ' 秒' : '获取验证码'}}
              </el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </div>
    <div style="margin-top: 70px">
      <el-button
        style="width: 380px; font-size: 20px"
        type="warning"
        @click="register"
        plain
      >立即注册</el-button>
    </div>
    <div style="margin-top: 20px">
      <span style="font-size: 16px;line-height: 15px;color: grey">已有账号? </span>
      <el-link
        type="primary"
        style="translate: 0 -2px;font-size: 16px"
        @click="router.push('/')"
      >立即登录</el-link>
    </div>
  </div>
</template>

<script setup>
import router from "@/router";
import { reactive, ref } from "vue";
import { ElMessage } from "element-plus";
import { post, put } from "@/net";

const form = reactive({
  username: '',
  password: '',
  password_repeat: '',
  email: '',
  code: ''
})

const validateUsername = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请输入用户名'))
  } else if (!/^[a-zA-Z0-9\u4e00-\u9fa5]+$/.test(value)) {
    callback(new Error('用户名不能包含特殊字符，只能是中文/英文'))
  } else {
    callback()
  }
}

const validatePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次输入密码'))
  } else if (value !== form.password) {
    callback(new Error("两次输入的密码不一致"))
  } else {
    callback()
  }
}

const rules = {
  username: [
    { validator: validateUsername, trigger: ['blur', 'change'] },
    { min: 2, max: 8, message: '用户名的长度必须在2-8个字符之间', trigger: ['blur', 'change'] },
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 6, max: 16, message: '密码的长度必须在6-16个字符之间', trigger: ['blur', 'change'] }
  ],
  password_repeat: [
    { validator: validatePassword, trigger: ['blur', 'change'] },
  ],
  email: [
    { required: true, message: '请输入邮件地址', trigger: 'blur' },
    { type: 'email', message: '请输入合法的电子邮件地址', trigger: ['blur', 'change'] }
  ],
  code: [
    { required: true, message: '请输入获取的验证码', trigger: 'blur' },
  ]
}

const formRef = ref()
const isEmailValid = ref(false)
const coldTime = ref(0)

const onValidate = (prop, isValid) => {
  if (prop === 'email')
    isEmailValid.value = isValid
}

const register = () => {
  formRef.value.validate((isValid) => {
    if (isValid) {
      put('/account/verify_email_code', {
        email: form.email,
        code: form.code
      }, () => {
        post('/account/register', {
          name: form.username,
          email: form.email,
          pwd: form.password,
        }, (message) => {
          ElMessage.success(message.msg)
          router.push("/")
        })
      })
    } else {
      ElMessage.warning('请完整填写注册表单内容！')
    }
  })
}

const validateEmail = () => {
  coldTime.value = 60
  post('/account/verify_email', {
    email: form.email
  }, (message) => {
    ElMessage.success(message.msg)
    setInterval(() => coldTime.value--, 1000)
  }, (message) => {
    ElMessage.warning(message.msg)
    coldTime.value = 0
  })
}
</script>

<style scoped>
</style>